简介：Regeneratedcellulosefilmswithwater-resistancewereobtainedbyanimprovedmethodofpreparingcellulosecuoxamsolutionfrompulpsofagriculturalwastes(linters,wheatstraw,reedandBamao).Experimentalresultsshowedthatthemechanicalpropertiesofboththedry.andwetfilmswereexcellent.DatafromIR,SEMandtensilestrengthmeasurementsimpliedthatthesignificantimprovementofwater-resistanceofthefilmswasduetothecohesionbetweenthethinTungoilcoverswithhydrophobicityandtheregeneratedcellulosefilms.Thefilmswerecompletelybiodegradedafterbeingburiedinsoilfor100days.Thetransmittanceofthefilmsderivedfromlinterandreedinvisiblebandrangewere80-90%.

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简介：Nano-SiO2或哞3被介绍给橡胶(EVA/NBR)混合包含镁氢氧化物(MH)和红磷(RP)进一步改进机械性质的乙烯乙烯基acetate/nitrile丁二烯，油抵抗，吸抑制和火焰retardancy。结果显示张力的力量和油抵抗被合并nano-SiO显著地改进<潜水艇class=“a-plus-plus”>2。为EVA/NBR混合样品的烟抑制测试两个都显示出那nano-SiO<潜水艇class=“a-plus-plus”>2和哞<潜水艇class=“a-plus-plus”>3能显著地减少烟版本数量。易燃的描述显示有33.0的LOI价值的混合样品能在UL-94测试完成V-0水平。锥热量测定测试数据证明山峰热版本率是67%比那低为纯EVA/NBR。热分析证明两nano-SiO的存在<潜水艇class=“a-plus-plus”>2和哞<潜水艇class=“a-plus-plus”>3对支持EVA/NBR混合的字符形成有益。字符剩余分析建议了那哞<潜水艇class=“a-plus-plus”>在燃烧期间在稳固的阶段聚集的3。

简介：ThepaperintroducesthepreparationoffloatingTiO2/beadsphotocalystattachedtothehollowglassmicro-beadssurfacebysol-geltechniqueusingtetrabutyltitanateasmaterialandthepreparationoffloatingCoPcS/TiO2/beadsbydip-coatigtechnique.TheoptimalfactorofdegradationofvegetableoilfloatingonwaterusingCoPcS/TiO2/beadswasstudied.Theresultshowedthattheremovalrateofvegetableoilfloatingonwatercanhighlyreach90%attheoptimalcondition(acidityorneutrality,375Wmedium-pressuremercuryvapourlamp,illumination2h~3h,1gCoPcS/TiO2/beads).ThephotocatalyticremovalefficiencycausingbyCoPcS/TiO2/beadswasincreasedrapidlybyaddingatraceamountofH2O2.

简介：Thesolubilityofinitiatordeterminesitsdistributionandtherolesplayedinemulsionpolymerizationaswellasthefinalproducts,butthisisstilllackofsystematicinvestigation.Thepresentworkfocusesonthisissuebycomparingthekineticbehaviorsandproductpropertiesofstyreneemulsionpolymerizationinitiatedby2,2-azoisobutyronitrile(AIBN)andpotassiumpersulphate(KPS).ComparedtoKPS-initiatedemulsionpolymerization,theAIBN-initiatedpolymerizationwasfoundtobeinsensitivetothetypeofemulsifier,andhavehighpolymerizationrateaswellasnarrowmolecularweightdistributionandparticlesizedistribution.Thisresultindicatestheeffectivefreeradicalsaregeneratedinmicellesorcolloids,whichcoulddecreasetheproportionofhomogeneousnucleationandmaketheprocessandproductmorecontrollable.Asaconsequence,thereisalinearrelationshipbetweenmolecularweightofproductandAIBNconcentrationinlg-lgcoordinate.Itprovidedareferenceforthepreparationoflatexeswithspecifiedmolecularweightandsupportedthepossibilityofthecoexistenceofmultiplefreeradicalsinonemicelleorcolloidwhenusingoil-solubleinitiator.